Across
- 3. a water source under the ground
- 5. rain, snow, sleet, or hail
- 6. the first country to use chlorine to kill germs in the water
- 8. water vapor becoming a liquid (dew) or a solid (frost)
- 9. water moving downward through openings in the soil
- 10. water that runs along the soil and goes into lakes and rivers
- 11. water under the ground that supplies springs and wells
Down
- 1. water as a gas in the air
- 2. liquid water becoming a gas
- 4. water moves from the earth to the air and to the earth again
- 7. the first people to record methods of treating water